| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve usability of a user when a ceiling plane is used as a screen to project a screen thereonto. <P>SOLUTION: An image display device comprises: a projection unit which is provided with a projection angle changeable in a vertical direction; a projection angle detection section which detects the projection angle of the projection unit; a screen correction unit which corrects trapezoidal distortion of a screen and inverts the screen; and an operation instruction section which instructs a first processing to a correction amount of the trapezoidal distortion correction and a second processing to invert the screen. When the projection angle detected by the projection angle detection section is a prescribed projection angle or less, the operation instruction section instructs the screen correction unit to perform the first processing by a user operation. When the projection angle detected by the projection angle detection section is more than a prescribed projection angle, the operation instruction section instructs the screen correction unit to perform the second processing by a user operation. <P>COPYRIGHT: (C)2013,JPO&INPIT |
